Independent mobile app studio
EGI Studio builds mobile and web products with Flutter, React Native, Next.js, React, TypeScript, and AWS, from early product work through production and shipped App Store apps.
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Profile
Yasuyuki Egi is a software engineer with experience in enterprise package software, a generative AI product, ocean-information mobile apps, freelance work, and independently released Flutter iOS apps.
Flutter and React Native development for iOS and Android, including UI implementation, testing, and App Store release preparation.
Hands-on productization and new-product development with Next.js, React, TypeScript, NestJS, AWS, and Docker in small-team environments.
A practical focus on GitHub Actions, test coverage, operational fixes, and ongoing learning through documentation and technical books.
Featured projects
Representative areas include generative AI products, ocean-information mobile apps, and independently shipped Flutter iOS apps.
Generative AI product
A new product designed to draw out employee feedback through anonymous posts and conversations with generative AI, then report insights to management. Yasuyuki contributed as the main engineer through productization, using a Flutter app, a Next.js admin web app, React / TypeScript, AWS, and Docker.
Freelance development
Mobile development for an ocean forecasting service used by fisheries. Work included iOS and Android features with React Native and TypeScript, plus GitHub Actions and test-code improvements.
Indie apps
Two Flutter-built iOS apps released on the App Store. Yasuyuki handled UI design, implementation, and Apple submission end to end.
Stack
The studio works across mobile, web frontend, backend, infrastructure, and CI/CD to keep products moving.